Use opentelementry-bom to manage versions

[kennknowles]

Fixes failures such as https://github.com/GoogleCloudPlatform/DataflowTemplates/actions/runs/33453848741 which are caused by dependency downgrade:

  +- com.google.cloud:google-cloud-spanner:test-jar:tests:6.113.0:test
  |  \- io.opentelemetry:opentelemetry-sdk-metrics:jar:1.51.0          <-- WINS
  +- com.google.cloud:google-cloud-spanner:jar:6.121.0:compile
  |  \- (io.opentelemetry:opentelemetry-sdk-metrics:jar:1.62.0 - omitted for conflict with 1.51.0)

Internal tracking bug b/555717934

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses dependency conflict issues where OpenTelemetry libraries were being incorrectly downgraded by transitive dependencies. By importing the OpenTelemetry BOM and pinning the version, the project ensures that all OpenTelemetry components remain at the required version, preventing runtime failures related to mismatched SDK versions.

Highlights

• Dependency Management: Added opentelemetry-bom to the project's dependency management section to ensure consistent versioning of OpenTelemetry artifacts.
• Version Pinning: Defined an explicit opentelemetry.version property set to 1.62.0 to prevent unintended dependency downgrades caused by Maven's nearest-wins resolution strategy.

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[gemini-code-assist]

Code Review

This pull request adds the opentelemetry-bom dependency to the pom.xml to manage OpenTelemetry versions consistently. The feedback points out that the order of BOM imports in Maven is critical; importing opentelemetry-bom after the Beam BOM could lead to mixed-version classpath issues. It is recommended to move the opentelemetry-bom import before the Beam BOM to ensure the correct version takes precedence.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.34%. Comparing base (4364622) to head (643d3f5).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@              Coverage Diff              @@
##               main    #4299       +/-   ##
=============================================
+ Coverage     34.34%   56.34%   +21.99%     
- Complexity      524     7403     +6879     
=============================================
  Files           216     1155      +939     
  Lines         13274    73226    +59952     
  Branches       1322     8585     +7263     
=============================================
+ Hits           4559    41258    +36699     
- Misses         8345    29180    +20835     
- Partials        370     2788     +2418     

Components	Coverage Δ
spanner-templates	84.46% <ø> (∅)
spanner-import-export	69.01% <ø> (∅)
spanner-live-forward-migration	88.91% <ø> (∅)
spanner-live-reverse-replication	80.82% <ø> (∅)
spanner-bulk-migration	88.96% <ø> (∅)
gcs-spanner-dv	88.02% <ø> (∅)
see 964 files with indirect coverage changes

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[stankiewicz]

Caused by: java.sql.SQLException: ORA-01017: invalid username/password; logon denied ..